TY - JOUR AU - Ravindra Kumar, K. Srivastava, J. Somappa, Sunil Kumar and R. K. Singh. PY - 2012/06/30 Y2 - 2024/03/29 TI - Heterosis for yield and yield components in Tomato (Lycopersicon esculentum Mill) JF - <i>Electronic Journal of Plant Breeding</i> JA - EJPB VL - 3 IS - 2 SE - Research Note DO - UR - https://ejplantbreeding.org/index.php/EJPB/article/view/505 AB - A trial comprising 15 hybrids and 8 parental lines was in conducted a randomized block design with three replications duringwinter 2010-11 at Vegetable Research Farm, Banaras Hindu University, Varanasi, India. Heterosis was estimated in fifteensingle experimental cross hybrids, obtained by five parental lines namely H-24, DT-2, CO-3, Punjab Upma, Pant T-3 andthree testers of tomato viz. Floradade, Kashi Sharad, Azad T-5 for yield and yield related traits; plant height, days to 50%flowering, number of fruits per plant, average fruit weight, fruit diameter, number of fruits per cluster and total yield perplant. Significant differences among genotypes were observed for all the traits. Positive and highly significant heterosis wasfound for number of fruits per plant 25.27%, 25.13% and 21.13% over better parent and 29.95%, 25.27% and 24.46% overstandard parent and for total yield per plant 32.06%, 18.34%, 13.36% and 11.27% over better parent and 31.83%, 31.14%,30.10% and 25.26% over standard check ‘Azad T-5’. The hybrid also showed significantly high percentage of positiveheterosis over better and standard parent for number of fruits per cluster, average fruit weight and the hybrids showednegative heterosis for plant height and day to 50% flowering which are desirable characters. ER -